This was the first year that I decided to participate in the monthly resolutions challenge. That was a fun way to try out some things for just a month. Of the 12 monthly goals, there were a few designed to last for a month or several - for a specific deadline; some were things I could do indefinitely but ended up deciding I don’t need to, and 5 were something I have kept for the remainder of the year. Specifically:
January 
submitting checklists to eBird, to discourage long pauses when I am not on exciting trips — did for the entire year, was fun and not too overwhelming (250 checklists in total!); still deciding if I want to continue next year
February 
7 daily portions of fresh fruit and vegetables — saw I can do this easily and probably do on most days by myself, so discontinued to avoid the burden of logging. Similarly, in November /
I tracked the amount of consumed protein — while this worked on practice, I stopped early to avoid the overwhelm of logging during trips.
March whittle down for total pages on my (purchased, ARCs and library copies) TBR, with exponential increase of weight as a book “ages” — kept a version of this for the entire year, will continue; this was pretty effective for restricting my uncontrollable book acquisition and for encouraging tackling the older ones. In June I added a do-more for pages read pulled from storygraph, to have an idea of having done something when the previous progress is instantly negated by the new additions; also a keeper.
April May July were all versions of goals focused on writing drafts of certain deliverables for my postdoc project — those based on pomodoros, with a list of caveats for what counts, ended up the most effective; will repeat as needed
August regular checks if anything in (non-primary, university assigned) email needs attention — worked well to reduce the anxiety that I might have missed something; will use the strategy again in the future
September do-less on requesting new ARCs — worked for the month, the effect didn’t stick
October the trial run for what will be my next yearly challenge, reading books from countries I haven’t previously read anything from — I like how this has been going, I am discovering so many interesting things, definitely will do the entire challenge now
December drafted posts for year-summaries on birding and reading — generally, worked, but I assumed I will have three shorter summaries, while I ended up writing two longer ones, never getting to any summary for my beeminding for this thread.